Patent US3183293A successfully refreshed from Google Patents.
US3183293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric furnace
Assignee: Ling Temco Vought Inc
•
Filing: 1962-11-19
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Granted: 1965-05-11
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Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Jack M Beasley
- 👤 Jr Herbert Greenewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:59
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/08; H; H05; H05B; H05B7/00; H05B7/18; H05B7/22; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
60 words
A DEVICE FOR MAINTAINING A MATERIAL IN A MOLTEN STATE, SAID DEVICE COMPRISING: A CHAMBER CONTAINING SAID MATERIAL, MEANS FOR MAINTAINING AN ATMOSPHEREOF THERMALLY IONIZED NOBLE GAS WITHIN SAID CHAMBER, AND MEANS FOR ESTABLISHING A DIFFUSE FLOW OF ELECTRICAL CURRENT SUBSTANTIALLY THROUGHOUT SAID NOBLE GAS ATMOSPHERE TO MATINTAIN SAID CHAMBER AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID MATERIAL.
References Cited (Backward Citations)
US1310079A
Cited
US1763248A
Cited
US2589301A
Cited
US3147329A
Cited
US3061655A
Cited
US3025385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |